Fireman&#39;s hook



Dec. 6, 1949 4E. A. GOSSELIN 2,490,584

FIREMANS HOOK Filed April 26, 1946 i v .2 Fry 1 I? i H mm; if M W 9 5/ z Inventor v v QosseZz'w Patented Dec. 6, 1949 UNITED STATES PATENT OFFICE 2,490,684

FIREMANS HOOK Eugene A. Gosselin, St. Petersburg, Fla.

Application April 26, 1946, Serial No. 665,288

The present invention relates to new and use-' ful improvements in tools for use by firemen for the purpose of removing wall and ceiling materials in event of fire, such as metal ceilings, plaster and similar wall and ceiling coverings and the primary object of the invention is to provide a device for this purpose which may bemore readily employed and with better results than is obtained through the use of hooks now in use.

A further object of invention is to provide a tool of this character embodying spring means for exerting its force in a manner to penetrate the wall or ceiling whereby to aid in cutting through metal or plaster material.

A further object of invention is to provide a novel construction whereby the spring actuating.

means for the cutting edge of the hook is alternately contracted and expanded whereby to exert rapid hammer blows on the wall or ceiling by the 1 hook to penetrate or cut into the wall or ceiling.

A still further object is to provide a tool of this character of simple and practical construction, which is efiicient and reliable in use, strong and durable and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a fragmentary longitudinal sectional view showing the cutting head of the hook in projected position.

Figure 2 is a similar view showing the cutting head in retracted position.

Figure 3 is a transverse sectional view taken on a line 33 of Figure 2.

Figure 4 is a detail, in elevation, of the trip for releasing the plunger, and

Figure 5 is a similar view taken at right angles to Figure 4.

Referring now to the drawing in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of invention, the numeral 5 designates a portion of a wooden or lightweight metal handle having a barrel 6 secured to its outer end in longitudinal alignment with the handle in any suitable manner, such as by telescoping one end of the barrel over the handle and securing the barrel thereto by means of a rivet or the like I.

A cap 8 is threaded on the outer end of the barrel and is formed with a central opening 9 ICIaim. (01. 81-3) through which a plunger i0 is slidably mounted,

the plunger having a longitudinally extending groove H forming a key-way in which a key [2 carried by the cap 8 is received to prevent ro-' 6 intermediate its inner and'outer ends by means of screws or the like l5 and in which the plunger is slidably mounted and acollar I6 is' formed on or fixed to the plunger intermediate its ends forengaging the cap 8 to limit outward movementof the plunger and cutting head IS. A coil spring I! is positioned in the barrel 6 between the guide It and collar IE to exert its influence on the plunger to project the plunger and cutting head [3 outwardly of the barrel. A hammer designated generally at 18 is slidably mounted in the barrel 6 inwardly of the guide M, the hamuner including a tubular portion l9 having an annular head 20 formed at its outer end and in which the inner end of the plunger II] is slidablyreceived. The tubular portion [9 of the hammer is formed with a transverse opening 2| extending therethrough and in which a tubulartrip 22 is positioned for transverse sliding movement.

Secured to one side of the tubular portion IQ of the hammer is a leaf spring 23 extending longitudinally of the hammer and having a free upper end curved inwardly and bearing against one side of the trip 22 to urge the same laterally in the tube l9 out of alignment therewith as shown in Figure 1 of the drawing. The lower end of the plunger I0 is formed with a reduced extension 24 forming a shoulder 25 at the lower or inner end of the plunger adapted for engagement by the upper edge of the trip 22 to provide for an inward or downward movement of the hammer [8 by a retracting movement of the plunger l0 and head l3.

The tubular portion IQ of the hammer is of a diameter less than that of the barrel '6 and is adapted to enter a sleeve 26 retained in the inner end of the barrel. The upper end of the sleeve 26 is bevelled as shown at 21 and the lower edge of the trip 22 is also bevelled as shown at 30 and adapted for engagement with the bevelled edge 21 of the sleeve to slide the trip laterally to align the trip with the tubular portion IQ of the hammer and to release the hammer from the inner end of the plunger ll) upon the inward or retracting movement of the plunger ID.

A coil spring 3| is positioned in the sleeve 26 in engagement with the inner end of the hammer IE to drive the hammer upwardly or outwardly in the barrel 6 upon releasing thereof by the trip 22 whereby to cause a hammer blow against the collar M which functions as an anvil and thus cause an impact on the cutting head I3.

Describing in detail the use and operation of the invention; in the normal position of the parts, the plunger I is extended out ofthe barrel 6 with the collar l6 thrust against the cap Bby the spring [1. The trip 20 is held by the spring 23 in a position to engage the shoulder 25 on the plunger l6; Now, by exerting pressure on the handle in the direction of the cutting head $3, with said head pressed against a wall, the barrel 6 is moved forwardly along the plunger [0 to compress the springs ll, 3 l. This causes the bevel end 27 of the sleeve 26 to engage the bevel 30 on the trip Wand thereby cam the trip 28 out of engagement with the shoulder 25. in opposition to the spring 23. This releases the: hammer is to slide forwardly on the plunger l0, and atthe instant of release, thespring 3-l projects the hammer l8 against the guide [4, or anvil, causing, an, impact against the tensioned spring. it which is. transmitted to the plunger to through said spring l1 and the collar IE to drive the cutting; head t3 into the wall, or the like. Upon release of pressure on the handle 5, the plunger 1 0- is returned to the normal position described. Under the impact. against the plunger ID, the same is: drivenforwardly sufficiently to perm-it the trip 20: to be again engaged with the shoulder flit-by the spring '23.

In view of the foregoing description takerr in conjunction with the accompanying drawings it isbel-ieved that a clear understanding of the construction, operation and advamtagesor the device. will be quite apparent to those skilled in this: art; A: more; detailed description: is accordingly deemedl unnecessary.

It: is to be understood, howevem, that even though there is herein shown and described a pre ferred; embodiment: of: the invention the: same. is: susceptible to certain; changes fnily comprehended' by the spirit of the invention. as: herein-described:

and: the scope of therappended claim.

' plunger, whereby to press said cutter against an object under tension, a second coil spring in said barrel in the rear of said anvil, an annular hamme: in said barrel between said anvil and second coil spring slidable forwardly in said barrel and on said plunger and including a spring pressed trip normally engaging the rear end of the plunger, whereby sliding 'of said barrel and anvil forwardly causes the second coil spring to be compressed. and: said anvil to move forwardly of said hammer, said trip being releasable to disengage the rear end of the plunger, whereby under the reaction of the compressed second coil spring said hammer is slid forwardly against the anvil to cause impact againstthe compressed coilspring first mentioned for driving the cutter into the object, and means in said barrel coacting with said trip to release the same when said barreland anvit have been slid forwardly on the plunger in predetermined degree.

- EUGENE-A. GOSSELIN.

REFERENCES CITED The: following references are: of record in. the file: of. this patent:

UNITED STATES PATENTS Number Name Date 889,,40St Spalding l. June 2,1908- 1,536:,-3l9 Yost e May 5,1925 1,5721046 Seller a a. Feb; 9;, 19-26 1,593,287 Card; July 20,1926 157205318 Chisholm H ..s .i- July 9, 1929 2,017,369 McGhee Oct. 1-5; 193'5 

